ErrorException: session_start(): Session cannot be started after headers have already been sent in file /var/www/sync-quo/app/Http/Controllers/QuickbookControllers.php on line 5 #0 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(255): Illuminate\Foundation\Bootstrap\HandleExceptions->handleError(2, 'session_start()...', '/var/www/sync-q...', 5) #1 [internal function]: Illuminate\Foundation\Bootstrap\HandleExceptions->Illuminate\Foundation\Bootstrap\{closure}(2, 'session_start()...', '/var/www/sync-q...', 5) #2 /var/www/sync-quo/app/Http/Controllers/QuickbookControllers.php(5): session_start() #3 /var/www/sync-quo/vendor/composer/ClassLoader.php(576): include('/var/www/sync-q...') #4 /var/www/sync-quo/vendor/composer/ClassLoader.php(427): Composer\Autoload\{closure}('/var/www/sync-q...') #5 [internal function]: Composer\Autoload\ClassLoader->loadClass('App\\Http\\Contro...') #6 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Routing/Route.php(1096): is_a('App\\Http\\Contro...', 'Illuminate\\Rout...', true) #7 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Routing/Route.php(1035): Illuminate\Routing\Route->controllerMiddleware() #8 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Routing/Router.php(818): Illuminate\Routing\Route->gatherMiddleware() #9 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Routing/Router.php(800): Illuminate\Routing\Router->gatherRouteMiddleware(Object(Illuminate\Routing\Route)) #10 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Routing/Router.php(784): Illuminate\Routing\Router->runRouteWithinStack(Object(Illuminate\Routing\Route), Object(Illuminate\Http\Request)) #11 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Routing/Router.php(748): Illuminate\Routing\Router->runRoute(Object(Illuminate\Http\Request), Object(Illuminate\Routing\Route)) #12 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Routing/Router.php(737): Illuminate\Routing\Router->dispatchToRoute(Object(Illuminate\Http\Request)) #13 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(200): Illuminate\Routing\Router->dispatch(Object(Illuminate\Http\Request)) #14 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(144): Illuminate\Foundation\Http\Kernel->Illuminate\Foundation\Http\{closure}(Object(Illuminate\Http\Request)) #15 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(21): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request)) #16 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ConvertEmptyStringsToNull.php(31): Illuminate\Foundation\Http\Middleware\TransformsRequest->handle(Object(Illuminate\Http\Request), Object(Closure)) #17 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate\Foundation\Http\Middleware\ConvertEmptyStringsToNull->handle(Object(Illuminate\Http\Request), Object(Closure)) #18 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(21): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request)) #19 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TrimStrings.php(40): Illuminate\Foundation\Http\Middleware\TransformsRequest->handle(Object(Illuminate\Http\Request), Object(Closure)) #20 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate\Foundation\Http\Middleware\TrimStrings->handle(Object(Illuminate\Http\Request), Object(Closure)) #21 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ValidatePostSize.php(27): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request)) #22 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate\Foundation\Http\Middleware\ValidatePostSize->handle(Object(Illuminate\Http\Request), Object(Closure)) #23 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/PreventRequestsDuringMaintenance.php(99): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request)) #24 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate\Foundation\Http\Middleware\PreventRequestsDuringMaintenance->handle(Object(Illuminate\Http\Request), Object(Closure)) #25 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Http/Middleware/HandleCors.php(49): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request)) #26 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate\Http\Middleware\HandleCors->handle(Object(Illuminate\Http\Request), Object(Closure)) #27 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Http/Middleware/TrustProxies.php(39): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request)) #28 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate\Http\Middleware\TrustProxies->handle(Object(Illuminate\Http\Request), Object(Closure)) #29 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(119): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}(Object(Illuminate\Http\Request)) #30 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(175): Illuminate\Pipeline\Pipeline->then(Object(Closure)) #31 /var/www/sync-quo/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(144): Illuminate\Foundation\Http\Kernel->sendRequestThroughRouter(Object(Illuminate\Http\Request)) #32 /var/www/sync-quo/public/index.php(51): Illuminate\Foundation\Http\Kernel->handle(Object(Illuminate\Http\Request)) #33 {main}